I am under the impression that one/a few basically have. However I could be wrong.
Technically no, the most in one address is : 4778096.51860200 CYG which is assumed to be held by an exchange.
Other than that the top 20 accounts do not even hold more than 1 Million CYG in one single account.
#1 : 4778096.51860200 CYG
#2 : 763086.63105030 CYG
#3 : 729449.87370954 CYG
#4 : 571958.73865366 CYG
#5 : 438200.64000000 CYG
From here it drastically lowers. Excluding the #1 wallet, the other top 19 have a total of around 5,670,754 CYG. That's 10 Million + controlled by 20 addresses, and a majority of the addresses are not staking. Also the dev stated, the 410000.00000000 wallet is the airdrop wallet, which hasn't been touched.
At current prices from people dumping, you can easily pick up 100K + for around 0.15 Bitcoin, doesn't take a whale to do this.